Rate Contract For Routines On Nt Series Cummins Das In Vessels Rate Contract For Routines On Nt Series Cummins Das In Vessels , Carry Out A , B And C Checks . Nt495 . 6000H1 . , Fuel System: ( A ) Clean And Calibrate Injectors And Record Test Pressures In Service Log . Also Change Injector Inlet Screen . ( B ) Replace Rocker Cover Gaskets . ( C ) Adjust Valve Tappet Clearances Within Limits And Record In Service Log . ( D ) Replace Fuel Pump Filter ( Screen And Magnet ) . ( E ) Calibrate Pt Fuel Pump And Record In Service Log . Nt495 . 6000H2 . , Air System: ( A ) Clean Turbocharger , Compressor Wheel And Diffuser ( B ) Check Turbo Charger Radial/End Bearing Clearance In-Situ . Note: Renew O Ring And Teflon Gasket When Turbocharger Is Opened For Checking Clearances . Nt495 . 6000H3 . , Charge Air Cooler & Fresh Water Cooler: ( A ) Clean The Internal Passages Of Charge Air Cooler And Fresh Water Cooler Coolant Side Using Restore Plus As Laid Down In Operating Manual . ( B ) Renew Coolant In The System ( C ) Inspect Charge Air Cooler Air Side And If Required Clean Using Hot Water And Pressure Test Up To 2Kg/Cm2 . Nt495 . 6000H4 . , Other Maintenance: ( A ) Clean Engine With Solvent . ( B ) Carryout Flushing Through Of Coolant System As Per Jic Nt495 . 6000H5 . , Check Thickness Of Vibration Damper At 0 , 90 , 180 And 270 Degree Positions . Replace Damper If Variation Of The 4 Readings Exceeds 0 . 010 Inch ( 0 . 25Mm ) Or Exceeds Max Allowable Thickness . Checks To Be Undertaken In Coupled Condition . Nt495 . 6000H6 . , Check All Safety Alarms And Trips . Nt495 . 6000H7 . , Check Crank End Clearances With A Dial Indicator , Attaching Against Damper Min- 0 . 13 Mm , Max-0 . 51 Mm . Nt495 . 6000H8 . , Tighten Mounting Bolts/Nut As Required . Nt495 . 6000H9 . , Alignment Checks: ( For Nt/Nta 855 Series Engines ) Undertake Alignment Checks Between The Generator And Engine And Restore Radial/Axial Initial Alignment To 25% Of The Max Limit . Nt495 . 6000H10 . , Carryout Visual Inspection Of Sv Mounts . Renew Mounts If Their Condition Is Deteriorated . Nt495 . Sr1 . , Undertake Alignment Checks Between The Generator And Engine And Restore Radial/Axial Initial Alignment To 25% Of The Max Limit . Nt495 . Sr2 . , Record Crankshaft End Clearances With A Dial Indicator , Attaching Against Damper Min- 0 . 13 Mm , Max-0 . 51 Mm When In Coupled Condition . Nt495 . Sr3 . , Check Torque Tightening Of Coupling Inner/Outer Members As Specified In The Manual For Das Fitted With Holset ( Reynolds ) Or Centamax Couplings . In Case Of Vulcan Couplings , Check For Cracks On Rubber And If Wear Mark Does Not Exceed Limits . Check Tightness Of Adaptor Plate Bolts ( Coupling Bolts ) Nt495 . Sr4 . , In Case Of 743/855 Engines . Check Thickness Of Vibration Damper At 0 , 90 , 180 And 270 Degree Positions . Replace Damper If Variation Of The 4 Readings Exceeds . 0 . 010 Inch ( 0 . 25Mm ) Or Exceeds Max Allowable Thickness . Checks To Be Undertaken In Coupled Condition . Nt495 . Sr5 . , Check Turbo Charger Radial/End Bearing Clearance In-Situ On Removal Of Inlet/Exhaust Pipes . Note: Renew O Ring And Teflon Gasket Whenever T/C Is Opened For Checking Clearances . Nt495 . Sr6 . , Carry Out A , B , C , D And Sr Checks . Nt495 . 12000H1 . , Offer Performance Assessment Trials On External Load Tank To Dttt/Etma And Vibration Trials To Mtu . Crankcase Blowby/Engine Smoke Condition Is Also To Be Recorded Along With All Other Performance Parameters . Trial Teams To Forward Recommendations . Nt495 . 12000H2 . , Undertake Random Inspection Of Two Representative Liners And Bearings Of The Engine . Inspect Other Liners/Bearings Incase Deteriorated . Following Inspection And Examination Cylinders To Be Carried Out: - ( A ) Gauging And Inspection Of One Liner From Each Bank For Corrosion/Pitting Post Extraction . ( B ) Gauging Of Connecting Rod Big End Bearing Clearances And Examination Of Big End Shell For The Cylinder Opened . ( C ) Check Condition Of Valve Gear Bracket , Transfer Sleeve Sealing Ring And Injector Tube . Inspection Of Valve Gear Parts And Valve Seat Inserts Of The Cylinder Head Opened . ( D ) Examine Crank Pin Surfaces And Check For Ovality And Wear . ( E ) Examine Pistons For Wear And Gauge Piston Ring Clearances . Renew Rings If Necessary . ( F ) Examine Lub Oil Pump Drive For Wear . Nt495 . 12000H3 . , Inspect Holset/Vulcan/Centamax Flexible Coupling And Torque Tighten Inner/Outer Members . Check Rubber Blocks/Disc For Deterioration . Renew If Necessary . Nt495 . 12000H4 . , Undertake Alignment Checks Between The Generator And Engine And Restore Radial/Axial Initial Alignment To 25% Of The Max Limit . Nt495 . 12000H5 . , Renew Rubber Vibration Dampers Where Fitted . Nt495 . 12000H6 . , Dismantle Auxiliary Drives And Check Bearing Clearances . Renew Bearings If Necessary . Examine All Gear Teeth For Pitting And Scuffing . Nt495 . 24000H1 . , Renew Big End Bearings , Their Bolts , Nuts And Washers . Nt495 . 24000H2 . , Check Main Bearing Clearances And Examine The Condition . Renew Bearing If Clearances Are Excessive . Nt495 . 24000H3 . , Remove , Clean And Examine All Cylinder Liners For Scoring And Corrosion . Gauge Liners Internally . Renew If Necessary . Nt495 . 24000H4 . , Clean All Water Passages . Renew All Sealing Rings . Nt495 . 24000H5 . , Examine And Gauge All Pistons . Renew Pistons If Necessary . Nt495 . 24000H6 . , Renew All Piston Rings . Nt495 . 24000H7 . , Remove Crankshaft And Check For Cracks , Scoring And Deflection , ( Eccentricity ) . Clean And Flush Out Oil Ways . Renew Teflon Seals . Nt495 . 24000H8 . , Overhaul Governor . Renew Worn Out Parts . Calibrate Governor After Completion Of Overhauling . Nt495 . 24000H9 . , ( A ) Remove And Chemically Clean Lub Oil Cooler And Fresh Water Cooler And Carry Out Pressure Testing . Replace If Required . ( B ) Renew Gasket And `O Seals . Nt495 . 24000H10 . , Remove And Check The Over Speed Trip ( Protection Device/ Sensor ) For Correct Setting/Functioning , Calibrate If Necessary . Nt495 . 24000H11 . , Refit Cam Shaft Drive Assembly . Nt495 . 24000H12 . , Check All Camshaft Bearing Clearances . Renew If Necessary . Check Valve Timing . Nt495 . 24000H13 . , Check All Connecting Rods For Bend And Twist . Clean And Flush Out Oil Passages . Nt495 . 24000H14 . , Renew Hp Fuel Pump . Nt495 . 24000H15 . , Remove , Clean And Retreat The Crankcase . Nt495 . 24000H16 . , Clean And Repaint Bedplate . Nt495 . 24000H17 . , Renew All Flexible Hoses . Nt495 . 24000H18 . , Gauge All Gudgeon Pins . Replace If Wear Is Excessive . Nt495 . 24000H19 . , Renew S . V . Mountings . Nt495 . 24000H20 . , Overhaul Turbo Supercharger . Renew Entire Unit If Parts Are Excessively Worn Out . Nt495 . 24000H21 . , Remove Air Cooler , Chemically Clean And Pressure Test On Completion Of Cleaning . Replace If Required . Nt495 . 24000H22 . , Overhaul Air Starting Motor . Renew Worn Partsnt495 . 24000H23 . , Renew Silicon Vibration Damper Where Fitted . Nt495 . 24000H24 . , Overhaul/Renew Holset/Vulcan/Centamax Coupling As Necessary . Renew The Rubber Inserts/ Member Of The Flexible Coupling . Renew All Fasteners /Bolts While Assembling The Coupling As Per Oem Recommended Procedure . Carry Out Engine To Alternator Alignment Procedure While Maintaining The Crankshaft End Clearances . Dowel The Alternator . Carry Out Full Load Trials And Vibration Checks Before Normal Service . Nt495 . 24000H25 . , Carry Out A , B And C Checks . Nt855 . 6000H1 . , Fuel System: ( A ) Clean And Calibrate Injectors And Record Test Pressures In Service Log . Also Change Injector Inlet Screen . ( B ) Replace Rocker Cover Gaskets . ( C ) Adjust Valve Tappet Clearances Within Limits And Record In Service Log . ( D ) Replace Fuel Pump Filter ( Screen And Magnet ) . ( E ) Calibrate Pt Fuel P
